package com.itheima.sh.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import java.util.List;
import java.util.Map;

@RestController
@RequestMapping("consumer")
public class ConsumerController {

    @Autowired
    private RestTemplate restTemplate;
    @Autowired
    private DiscoveryClient discoveryClient;

    @GetMapping("{id}")
    public Map queryById(@PathVariable("id") String id){
        //String url = "http://localhost:8082/user/" + id;//硬编码问题
       /* List<ServiceInstance> instances = discoveryClient.getInstances("USER-SERVER");
        System.out.println(instances);
        ServiceInstance serviceInstance = instances.get(0);
        String ip = serviceInstance.getHost();
        int port = serviceInstance.getPort();
        String url = "http://" + ip + ":" + port + "/user/" + id;*/
        //String url = serviceInstance.getUri().toString(); 直接获取ip+port
        // 调用RestTemplate的getForObject方法，指定url地址和返回值类型
        /**
         *ribbon 实现负载均衡
         *
         *@params
         *@return
         */
        String url = "http://user-server/user/" + id;
        Map user = restTemplate.getForObject(url, Map.class);
        System.out.println(user);
        return user;
    }

}
